Flue or pipe cutter.



No.- 686,252 Pat-enig@ Nov: l2 |90L @Aflzs.. iam/n 8g' A. n,Y GAME;` Y FLuE 0a PIPE vGUTTER. l

mpinlictionmeq muy 12, 1901.;-

erica,

sirena v ADAlil SilMPSON BOYD AND AUGUSTUS DANIEL rAl-llll, OF SIIENANDOAH,

I PENNSYLVANIA.

reus on weer` corren.

SPECIFICATION forming part of Letters Patent No. 686,252, dated November 12, 1901.

I Application filed July 12,1901. Serial No. 68.075. (No model) Be it known that we, ADAM Srnrson Bovo and AUGUSTUS DANIEL Gants, citizens of the United States, residing at Shenandoah, in the county of Schuylkill and Sta-tc of Pennsyl-4 vania, have invented certain new and useful improvements in Fine and Pipe Cutters; and we do declare the following to he a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to malte and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to devices for cut ting fines, pipes, and the like, and has for its object the production of an improved cutter adapted to operate nteriorly at any desired point to sever the flue or pipe7 the operation being accomplishedin the minimum of time and without the exercise of special skill.

The nature of the invention will be readily comprehended, reference being had to the following detailed description and to the accompanying drawings, in which- `Figure l is an elevation of a ilue or pipe cutter embodying the invention. Fig. 2 is a central longitudinal sectional view of the sama) Fig. 3 is a cross-sectional view on line 3 3 o Fig. 2, showing one adjustment of the utters. Fig. 4 is a cross-sectional View on ine 4: 4 or.' Fig. 2, showing another adjustment of the cutters.

Referring to the drawings hy letter, A depot-esa casing-section of cylindrical form having a central bore or chamber d and a screwthreaded aperture ci of less diameter than the bore or chamber a; B designates a casing-section, also of cylindrical form, a portieni) of which corresponds in diameter to the 'section A. The opposite end b ot the section B is of polygonal form, and biliis an intermediate portion of smaller diameter than the part b. The sections A. and B are'secured together endwise bya plurality of scew-bolts c c. The section B has a central bore c, eniarged toward the inner end to provide a chamber b4. At the inner end of thc section 5o B are a plurality of radiai tapered openings b5 l1, which receive olidahle cntterheads. Each cutter-head consists of a block d, the inner end of which is concentrically curved and having sides rl', which taper slightly, and thus con form to the tapered opening b5, whereby the head is limited in its outward movement and cannot become disconnected while the parts are assembled. The outer end of the block is recessed, and in said recess is mounted on a pin e a cutter-wheel e', having a knife-edge periphery. 'lhe walls of each opening bare provided with grooves Z1, which receive the periphery of the wheel.

F denotes a stem having at one end f screwthreads which engage the threaded aperture ct'. The other end f is squared, and between the ends is a tapered portion f2.

G denotes a gage, which is in the form of a collar, having extensions g q, from which project flanges g g. The gage-collar encircles the reduced portion b2 of the section B, and in one adjustment is confined against the shoulder of the portion i) by a sleeve 7L and a set-collar 1', which latter is secured by a pin or cotter 'i'. With this adjustment, which is shown in Figs. l and 2, lthe cutters -will operate to sever a liuc outside the boiler-head. If the fl ue is to be out within the boiler, the gage is shifted to a position to the rear of the sleeve l1, such position being shown in dotted lines in Fig. 1. When it is desired to outa fiue or pipe at a considerable distance from the end, the gage, sleeve, and collar are removed from the device to enable the latter to be moved inwardly the desired distance. The section A andipartb of section B are of slightly less diameter than the inside diameter of the pipe to be cut.

In operation thedevice is inserted the desired distance and a wrench or similar tool being applied to the squared end f of the stem said stem is rotated and through the screw-thread connection is moved inwardly.

In such movement the tapered portion fiengagesthe concentric surfaces of the bloclsdi `and forces said blocks, with the cutters, 'out.-

wlardly against the inner surface of thek ue or pipe. l,A wrench or like tool is then applied tothe -polygonalportiou b of the section B, and the device is turned to sever the flue or IOO 'operation it is very efficient, the ent being made in a comparatively very short time and :with the exercise of ordinary skill. The parts are assembled in such 4a manner as to afford ready access to the cutters, therebyfacilitating sharpening or replacing of the same.

i le claim as our inventionl l. An inside cutter for fines and pipefs eensisting of a rotatable cylindrical casing eentrally apertured, a rotatable stem inthe aperture having a threaded end engaging threads in the aperture and having an opposite squared end and an inter-mediate'tapered por tion, tapered blocks mounted in tapered radial openings in the easing said blocks being` engaged at their inner end by the tapered portion ofthe stem, an adjustable and removable gage consisting of flanges carried by'a collarloose on a reduced portion of the casing, a sleeve on said reduced portion adapted to be placed in iront or to the rear of the gage to change the location of the latter, and a set-collar removably confining the gage and sleeve.

2. An inside cutter lor lines and pipes eonsisting of a rotatable cylindrical easingvorlned of seetins deiaehably secured together end to end, one of the sections having in its inner end a'plurality of radially-disposed tapered openings the walls of which are grooved, ta-

pered blocks having a limited adjustment in said openings, rotary cutters mounted in the blocks and extending into the grooves, a tapered stem. movable in the easing to engage the blocks and adjust the cutters, and a gage adjustable on the easing to'deternine tlle location of the eutand remt.sabletherefrom to permit the further insertion nl. the cutter.

In testimony whereof we aiix our signatures in 'presence of two witnesses.

ADAM SIB'IPSON BOYD. AUGUSTUS DANEL GABLE. Witnesses:

Geenen Offres, JAMES GLovER. 

